diff --git a/httpdocs/assets/js/safekat/components/preview.js b/httpdocs/assets/js/safekat/components/preview.js
index 9aa9dec2..1efc4332 100644
--- a/httpdocs/assets/js/safekat/components/preview.js
+++ b/httpdocs/assets/js/safekat/components/preview.js
@@ -108,7 +108,7 @@ class previewFormas {
             anchoMaquina: parseFloat(rowData.maquina_ancho),
             altoImpresion: parseFloat(rowData.maquina_impresion_alto),
             anchoImpresion: parseFloat(rowData.maquina_impresion_ancho),
-            altoLibro: lpName=='faja'? parseFloat(rowData.alto_faja).toFixed(0):this.alto(),
+            altoLibro: lpName=='faja'? parseFloat(parseFloat(rowData.alto_faja).toFixed(0)):parseFloat(this.alto()),
             anchoLibro: this.ancho(),
             offsetSolapa: 0
         };
@@ -116,7 +116,7 @@ class previewFormas {
         //console.log(pvObj);
 
         // Printing shape definition
-        this.pvObj.anchoForma = parseInt(_isCosido) ? 2 * this.pvObj.anchoLibro : this.pvObj.anchoLibro;
+        this.pvObj.anchoForma = parseInt(_isCosido) ? parseInt(2 * this.pvObj.anchoLibro) : parseInt(this.pvObj.anchoLibro);
         this.pvObj.altoForma = this.pvObj.altoLibro;